minix/servers/mfs/time.c

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#include "fs.h"
#include "inode.h"
#include <minix/vfsif.h>
/*===========================================================================*
* fs_utime *
*===========================================================================*/
PUBLIC int fs_utime()
{
register struct inode *rip;
register int r;
/* Temporarily open the file. */
if( (rip = get_inode(fs_dev, (ino_t) fs_m_in.REQ_INODE_NR)) == NULL)
return(EINVAL);
/* Only the owner of a file or the super_user can change its time. */
r = OK;
if(read_only(rip) != OK) r = EROFS; /* not even su can touch if R/O */
if(r == OK) {
rip->i_atime = fs_m_in.REQ_ACTIME;
rip->i_mtime = fs_m_in.REQ_MODTIME;
rip->i_update = CTIME; /* discard any stale ATIME and MTIME flags */
IN_MARKDIRTY(rip);
}
put_inode(rip);
return(r);
}